Glass-cutting machine.



Patented Oat. I7, |899.

c. E. MANNING. GLASS CUTTING MACHINE.

(Application med nu. 21, 14899.)

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(No'Model.)

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No. 635,265. Patented Det. I7, |899.

C. E. MANNING. GLASS CUTTING MACHINE.

(Appxieason mea mu. 21, 1999.)

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T FFICG oHARLns E. MANNING,

OF CHICAGO, ILLINOIS.

LASS-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 63 5,265, dated October 17, 1899.

Application filed March 21, 1899. Serial No. 709,930. (No model.)

T0 CLZ wiz/071@ t may concern:

Be it known that I, CHARLES E. MANNING, a citizen of the United States, residing at Chicago, in the county of `Cook and State of Illinois, have invented certain new and useful Improvements in Glass- Cutting Machines; and 'I do hereby declare the following to be a full, clear, and eXact description of the invention, such as will enable others skilled inthe art to which it appertains to make and use the same.

My invention relates to improvements in machinesfor cutting strips of glass; and its object is to provide a machine which will cut strips of glass from waste cutting as well as from large sheets, the strips so cut to be used for forming prismatic and reflecting panels for illuminating purposes.

My invention will be understood by reference to the accompanying drawings, wherein the same parts are indicated by the same letters throughout the several views.

Figure l is a side elevation of my apparatus, hidden outlines being indicated in dotted lines for the sake of a clear understanding. Fig. 2 is a top plan view. Fig. 3 is a View similar to Fig. l of a modified form of machine; and Fig. 4 is a section taken on the line 4 4 in Fig. 3, looking in the direction of the arrows.

A represents a flat rectangular table mounted upon short legs A'. This table may be of wood or may be cast of iron. The upper surface, however, should be smooth. Upon the sides of this table and opposite each other are mounted a pair of uprights B B, which may be bolted to the sides of the table, or in the event of the table being cast of iron said uprights would preferably be cast integral with the sides of the table. A cross-beam B is rigidly mounted upon the upper end of these uprights and is provided centrally with an opening for the passage of a screw C, which Screw engages a threaded boss or collar B0, concentric with the opening through the cross-timber B. The screw C has' a circular boss c upon its lower end, which engages the holding-plate D and serves to raise or lower said holding-plate, as shown in dotted lines in Fig. l. The screw is provided with a turning-arm C', as shown, or its equivalent-a wheel-by means of which the same may be operated. The nprights B B serve as guides for the holding-plate D as the latter moves up or down. At one end of the table, which may be called the rear end,'is mounted a horizontal screw E, which engages in a threaded nut at E0, as indicated in dotted line in Fig. l, and the screw carries upon its rear end a hand-wheel E', by means of which the same may be turned.

F represents a flat plate which extends over the rear end of the table A, lying iiat thereon, and is connected to a head-piece F', so mounted upon the screw E, adjacent to the turning-wheel E', as to advance and recede therewith, but not to turn. This head-piece F carries a fixed pointer f in close relation to the rim of the hand-wheel, and this pointer f', in connectionl with a scale upon the adjacent surface of the wheelri in, serves as a gage by means of which the feed-plate F may be set.

Near the forward end of the table A is a transverse opening A0, at the rear side of which is formed a straigh t-edge a', over which the glass is broken in the operation of the machine. This edge ct should be slightly in advance of the forward edge d of the holding-plate D in order to allow for the width of the cutting-tool, which is run along the forward edge d of the said holding-plate as a guide, as will hereinafter more fully appear. An incline chute d2, extending from the breaking edge a', serves to deliver the strips into the tray T. The breaker may be either pivotal, as shown in Figs. 1 and 2, or reciprocal, as shown in Figs. 3 and 4.

In Figs. l and 2, II represents a heavy plate pivoted to the front end of the table by means of a cross-rod h passing through lugs h h upon the table. The plate H extends rearwardly over the opening A0 and has its rear edge provided with an under bevel, as seen at h2, which edge in operation is made to bear upon the strip to be broken off, as seen in Fig. 1. This breaking-plate is provided with one or more rigid handles H2, by means of which the attendant may operate the said breaking-plate.

Instead ofthe pivotal plate above described I may use a Vertically-reciproeated breakingbar, as shown in Figs. 3 and 4. In this arrangement a pair of uprights I I are mounted upon the sides of the table at opposite points and have guideways 0 fio, in which engage the ends of the vertically-movable breaker-bar I',

which is beveled, as shown in Fig. 3. This breaker-bar I is operated through the mc- IOO dium of a screw I2, which engages within to screw-threaded boss 2 on the cross-beam I3, mounted upon the uprights I I, the said screw having a rotary connection with a boss 723 on said breaker-bar. The screw I2 is operated by means of a hand-wheel I4, as show n.

The operation of the machine is as follows: The holding-plate D is elevated to a desired extent. The feed-plate F is run backward by means of the screw E to a sufficient extent to admit the plate of glass to be eut. The plate of glass is then inserted beneath the holdingplate D and the feed-plate run forward again, pushing the plate of glass into the position shown in Figs. l and et, the forward edge thereof, as seen atwin Figs. l and 4, extending beyond the breaking edge a a distance equal to the width of the strip desired, or in case of the first break from a plate of glass having an uneven edge a distance simply sufficient to secure a clean break across the plate. After adjusting the plate of glass as desired the holding-plate D is then lowered, binding the said glass plate securely in position upon the table. An attendant then runs a diamond or other cutting-tool across the plate of glass, using the forward edge d of the said holdingplate as a guide, after which the breakingplate H, or in case of a vertically-reciprocating breaker the bar I', is brought down upon the strip with sufficient force to impart thereto a sharp strain, which causes it to break along the cut previously made by the cuttingtool, and the strip slides down the chute into the tray provided therefor.

Many modifications in the details of my machine might be made without departing from the spirit of my invention.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

l. In a machine forproducing narrow strips of glass, the combination with a Iiat table having a straight transverse edge, a verticallymovable holding-plate for resting upon a plate of glass upon said table; a feed-plate adjustable longitudinally of said table; means for adjusting said feed plate; and means for breaking a strip of glass along the said transverse straight-edge of said table, substantially as described.

2. In amachine forproducing narrow strips of glass, the combination with a dat table, uprights upon the sides of said table; a screwoperated verticallymovable holding plate supported above and across said table by said uprights; a screw controlled feed plate mounted upon the end of said table; a gage for regulating the setting of said feed-plate; a straight-edge upon the forward side of said holding-plate for a cutter-guide; a straightedge upon said table and a vertically-movable breaker acting in conjunction with the straight-edge on said table for breaking strips by pressure against said straight-edge, substantially as described.

3. In a machine for producing narrow strips l of glass from fiat sheets; the combination with a flat table havinga transverse opening at or near one end, and a sharp angled straight-edge at the rear of said opening; a vertically-adjustable holding-plate mounted above said table, and having a straight-edge thereon transversely of said table for the purpose of guiding a cutter, parallel to and a short distance in rear of the straight-edge on the table; means for intermittently feeding a plate of glass along said table; and means for breaking off the strip along the said straight-edge on the table, substantially as described.

4. In a machine for producing narrow strips of glass from flat sheets, the combination with a fiat table; uprights upon the sides of said table; a screw-operated vertically-movable holding-plate supported above and across said table by said uprights; a feed plate mounted upon the end of said table; a screw for operating said feed-plate; a hand-wheel on said screw; a pointer acting in conjunction with a scale on the rim of said handwheel for regulating the setting of said feedplate; a straight-edge upon the forward side ot' said holding-plate for a cutter-guide; a straight-edge upon said table and a vertically-movable breaker acting in conjunction with the straight-edge on said table for breaking strips by pressure against said straightedge, substantially as described.

5. In a machine for producing narrow strips of glass from fiat sheets; the combination with a fiat table having a transverse opening at or near one end, and a sharp angled straight-edge at the rear of said opening; a vertically-adjustable holding-plate mounted above said table, and having a straight-edge thereon transversely of said table for the purpose of guiding a cutter, parallel to and a short distance in rear of the straight-edge on the table; means for intermittently feeding a plate of glass along said table; a transverse vertically-movable bar having a beveled edge for striking and breaking off the strip along the said straight-edge on the table, substantially as described.

6. In a machine for producing narrow strips of glass from flat sheets, the combination with a flat table havinga straight transverse edge, a vertically movable holding plate above said table; a feed-plate adjustable longitudinally of said table; means for adjusting said feed-plate; and a breaker having a straight beveled edge parallel to said straightedge on the table arranged to be brought into contact with the edge of a sheet of glass extending beyond said straight-edge for breaking a strip therefrom, substantially as described.

In testimony whereof I afiix my signature in presence of two witnesses.

CHARLES E. MANNING.

Vitnesses;

l M. J. STURM,

W. H. MERWIN.

IOO

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